Zarcon Dee Grissom's Idea Page
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Updated 29APR2009
Home > Meet the computers > LAB1 > LAB1v2 Case mod. 

A year over do, the mods done to LAB1's new case.


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LAB1v2.
Well after I spotted this case in the scrap pile, I jumped at it. I think my exact word were "Mine!, How much?". As I walked out the door with it. lol

LAB1v2 front bare
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LAB1v2 inside
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LAB1v2 front with coffee stains
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The front bezel was perfect for a wide open intake, and the case was partly ATX already. The only opportunity, was I would have to relocate the hard drives, in order to mount the fans on the front. Before I could figure that out, I needed to get the dummy fans and Stators in the fount, so I could measure what I had left for room.

Warning.

1> I Will NOT be responsible for anyone being stupid and operating dangerous power/non-powered tools they do not know how to operate safely, and causing damage to themselves and/or equipment in the process. RTFM!
2> get all the metal shavings out of the case with a shop-vac, and compressed air, before you bring the case any where close to the final working electronic guts. the drilling and cutting shavings will do nasty things to your expensive electronic parts. they'll even destroy some vacuum cleaners.
3> Metal shavings can destroy vacuum cleaners, Don't test your eyes resilience to them. Ware safety goggles certified for metal work.
4> Sharp edges will make nasty cuts, requiring trips to the emergency room for stitches. Ware thick leather gloves, preferably Welding gloves when handling sheet-metal, and watch where BOTH your hands are at ALL times.
5> Ask many questions, do lots of research, measure allot, test on stuff you don't care about first that you own, and hesitate to cut and drill the final project.
6> And last but not least. I will not be responsible for how good or ugly your computer-mod, or any other project inspired by my sight, looks, function, or fails.



LAB1v2 dummy fans
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LAB1v2 dummy fans
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That will do for now. The dummies are in place, and now I can sit back and try to figure out where to mount the drives away from the fans degaussing fields, and get sufficient cooling.

LAB1v2 dummy adapter
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I originally thought about getting a CD-to-floppy drive adapter and mounting it to the front bezel above the fans. This would help cool the drives, and force most of the incoming air down towards the motherboard. Con, it places the drive right on top of the fans magnetic fields, and the front bezel simply couldn't bare the weight of the drive up there with out bending back. There was no way for me to attach a brace to the bottom of the case without removing the motherboard tray that was riveted in place. I would need to run beams to the back of the case to brace the rack.

LAB1v2 hdd there
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LAB1v2 clearance
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LAB1v2 hdd caddy
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While I was measuring the length of these braces, I stumbled across the perfect mounting spot for not just one drive, but a data drive as well. I needed to work around the PCI cards height, and the clips for the front bezel. The camera got left aside as I dove in with the dremel, drill, and hacksaw.

LAB1v2 HDR exhaust side
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LAB1v2 HDR underside
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LAB1v2 HDR topside
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Well, this layout seams to be outstanding in cooling the drives. However finding an addiquite PATA cable with sufficient length between the drive plugs seams to be quite difficult. For SATA/SAS/SCSI that wont be a problem.

Top view
LAB1v2 top view
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Side View
LAB1v2 side view
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Left fan
LAB1v2 left fan
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Right fan
LAB1v2 right fan
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Now to add some confusion, this is a view threw each fan (Axial Compressor? *1) opening. The left fan is cooling the hard drives, and expansion slot side of the motherboard. The right fan is is cooling the CPU/ram aria of the motherboard.
thermistor schematic
Each fan is not outfitted with the stock thermistor, I've devised a network of thermistors that allows multiple parts to be monitored, and compounds the increase of speed/RPM/cfm with the rise of temperature. The first prototype of this multiple thermistor creation was implemented in OSWATT, to sense the VGA card, and HDD/CD racks. It is no more complected then a parallel/series network of speakers, however the placement of each sensor is much more tricky.
temps vs RPM
For this case, the 80mm thermal take smart fans idle around 1400RPM at around 80F in the bios screen (above 1800RPM above 90F under load). Temperature being the hottest part(s) monitored by the fan (GPU and/or CPU). The picture was taken at 81.5F room temperature, "case" is the north bridge temperature.

LAB1v2 uATX baffle
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LAB1v2 uATX baffle
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That black thing to the left of the cards is just a baffle to nudge the air towards the components. If the motherboard was a full size one, then there would be stuff in that aria of the case worth cooling. I did a little digging around about "turning vanes" and wind tunnel design, before I added the fins and stuff to the front of the baffle.


*1) Well there not really just fans, they have stators behind the impeller. There not really an "Axial Compressor" either,  Axial Compressors usually have many stages, and these things are not compressing air on the intake side of a jet engine.

Home > Meet the computers > LAB1 > LAB1v2 Case mod.

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